Home / 145,156,987.40-218,059,884.30-121,269,115.40

Finding the Fourth Proportional to 145,156,987.40, 218,059,884.30 and 121,269,115.40

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Solution

The fourth proportional to 145,156,987.40, 218,059,884.30 and 121,269,115.40 is: 182,174,690.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,156,987.40 : 218,059,884.30 = 121,269,115.40 : x
  2. Step 2: Convert to fraction form
    145,156,987.40/218,059,884.30 = 121,269,115.40/x
  3. Step 3: Cross multiply
    145,156,987.40x = 218,059,884.30 × 121,269,115.40
  4. Step 4: Simplify right side
    145,156,987.40x = 26,443,929,273,287,352
  5. Step 5: Solve for x
    x = 26,443,929,273,287,352/145,156,987.40
  6. Step 6: Final answer
    x = 182,174,690.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.